Prior to this commit, the online payment portal was using the default Odoo checkout layout when a user tried to pay for their order on the POS self-order. This commit enhances the UI and layout of the payment page (excluding the o_payment_checkout form) as well as the confirmation page. task-3433949 closes odoo/odoo#137090 X-original-commit: 046295b4a1651ba9ad3bfd8a9184154bde0ae1e2 Signed-off-by: Joseph Caburnay (jcb) <jcb@odoo.com>